Network Working Group                                            P. Pate
Request for Comments: 3020                                      B. Lynch
Category: Standards Track                              Overture Networks
                                                              K. Rehbehn
                                                   Megisto Systems, Inc.
                                                           December 2000

                     Definitions of Managed Objects
                   for Monitoring and Controlling the
                 UNI/NNI Multilink Frame Relay Function

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

Abstract

   This memo defines a Management Information Base (MIB) for monitoring
   and controlling a UNI/NNI Multilink Frame Relay Function as defined
   in Frame Relay Forum FRF.16.  This MIB also includes conformance and
   notification information.

   1 The SNMP Management Framework ................................    2
   2 Overview .....................................................    3
   2.1 Multilink Frame Relay Background ...........................    3
   2.1.1 Terminology ..............................................    4
   2.1.2 Reference Model ..........................................    5
   2.2 Structure of the MIB .......................................    5
   2.2.1 mfrBundleMaxNumBundles ...................................    6
   2.2.2 mfrBundleNextIndex .......................................    6
   2.2.3 mfrBundleTable ...........................................    6
   2.2.4 Bundle-to-ifIndex Mapping Table ..........................    6
   2.2.5 mfrBundleLinkTable .......................................    6
   2.3 Relationship With Other MIBS and Tables ....................    7
   2.3.1 Relationship With Interface Table ........................    7
   2.3.1.1 Bundle Links ...........................................    7
   2.3.1.2 Bundles ................................................    7

   2.3.1.3 Mapping Between ifIndex and mfrBundleIndex .............    8
   2.3.1.4 ifTable Objects ........................................    8
   2.3.2 Relationship With Interface Stack Table ..................    9
   2.3.3 Relationship With Frame Relay DTE MIB ....................    9
   2.3.4 Relationship With Frame Relay Service MIB ................    9
   2.3.5 Example ..................................................    9
   2.4 Creation Of Bundles and Bundle Links .......................   11
   2.4.1 Creation Of Bundles ......................................   11
   2.4.2 Creation Of Bundle Links .................................   11
   2.5 Notifications ..............................................   11
   2.5.1 Bundle ...................................................   11
   2.5.1.1 linkUp .................................................   12
   2.5.1.2 linkDown ...............................................   12
   2.5.2 Bundle Link ..............................................   12
   2.5.2.1 linkUp .................................................   12
   2.5.2.2 linkDown ...............................................   12
   2.5.2.3 mfrMibTrapBundleLinkMismatch ...........................   12
   3 Object Definitions ...........................................   13
   4 Acknowledgments ..............................................   32
   5 References ...................................................   32
   6 Security Considerations ......................................   34
   7 Authors' Addresses ...........................................   35
   8 Full Copyright Statement .....................................   36

1. The SNMP Management Framework

   The SNMP Management Framework presently consists of five major
   components:

   o  An overall architecture, described in RFC 2571 [RFC2571].

   o  Mechanisms for describing and naming objects and events for the
      purpose of management.  The first version of this Structure of
      Management Information (SMI) is called SMIv1 and described in STD
      16, RFC 1155 [RFC1155], STD 16, RFC 1212 [RFC1212] and RFC 1215
      [RFC1215].  The second version, called SMIv2, is described in STD
      58: RFC 2578 [RFC2578], RFC 2579 [RFC2579] and RFC 2580 [RFC2580].

   o  Message protocols for transferring management information.  The
      first version of the SNMP message protocol is called SNMPv1 and
      described in STD 15, RFC 1157 [RFC1157].  A second version of the
      SNMP message protocol, which is not an Internet standards track
      protocol, is called SNMPv2c and described in RFC 1901 [RFC1901]
      and RFC 1906 [RFC1906].  The third version of the message protocol
      is called SNMPv3 and described in RFC 1906 [RFC1906], RFC 2572
      [RFC2572] and RFC 2574 [RFC2574].

   o  Protocol operations for accessing management information.  The
      first set of protocol operations and associated PDU formats is
      described in STD 15, RFC 1157 [RFC1157].  A second set of protocol
      operations and associated PDU formats is described in RFC 1905
      [RFC1905].

   o  A set of fundamental applications described in RFC 2573 [RFC2573]
      and the view-based access control mechanism described in RFC 2575
      [RFC2575].

   A more detailed introduction to the current SNMP Management Framework
   can be found in RFC 2570 [RFC2570].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the mechanisms defined in the SMI.

   This memo specifies a MIB module that is compliant to the SMIv2.  A
   MIB conforming to the SMIv1 can be produced through the appropriate
   translations.  The resulting translated MIB must be semantically
   equivalent, except where objects or events are omitted because no
   translation is possible (use of Counter64).  Some machine readable
   information in SMIv2 will be converted into textual descriptions in
   SMIv1 during the translation process.  However, this loss of machine
   readable information is not considered to change the semantics of the
   MIB.

2. Overview

   This document defines a Management Information Base (MIB) for
   monitoring and controlling the UNI/NNI Multilink Frame Relay
   function.  The agreement on which this MIB is based was defined and
   documented by the Frame Relay Forum in the Frame Relay Forum Document
   FRF.16 [FRF.16].

2.1. Multilink Frame Relay Background

   Multilink Frame Relay (MFR) for the User-to-Network Interface (UNI)
   and the Network-to-Network Interface (NNI) provides physical
   interface emulation for frame relay devices.  The emulated physical
   interface consists of one or more physical links, called "bundle
   links", aggregated together into a single "bundle" of bandwidth.
   This service provides a frame-based inverse multiplexing function,
   sometimes referred to as an "IMUX".

   The bundle provides the same order-preserving service as a physical
   layer for frames sent on a data link connection.  In addition, the
   bundle provides support for all Frame Relay services based on UNI and
   NNI standards.

2.1.1. Terminology

   Physical Link --    A single physical interface that interconnects
                       two devices in a frame relay network (e.g., DS1,
                       DS0, Bearer channel, refer to FRF.14).

   Bundle --           A grouping of one or more physical links using
                       the formats and procedures of multilink frame
                       relay.  The bundle operates as a logical
                       interface function that emulates a single
                       physical interface to the Q.922 data link layer.

   Bundle Link --      A MFR sub-component that controls operation of
                       one of the bundle's physical links.

2.1.2. Reference Model

+--------------------------+               +--------------------------+
|   Switching Layer -OR-   |               |   Switching Layer -OR-   |
| Higher-Level Applications|               | Higher-Level Applications|
+--------------------------+               +--------------------------+
|          |C-Plane - Q.933|               |          |C-Plane - Q.933|
| U-Plane  |    (Note 1)   |               | U-Plane  |    (Note 1)   |
| (Note 3) |---------------|               | (Note 3) |---------------|
|          |Q.922 (Note 2) |               |          |Q.922 (Note 2) |
+--------------------------+               +--------------------------+
| Data Link Layer (Q.922)  |               | Data Link Layer (Q.922)  |
+--------------------------+               +--------------------------+
|       Bundle (B)         |               |       Bundle (B)         |
+--------------------------+               +--------------------------+
| Bundle | Bundle | Bundle |               | Bundle | Bundle | Bundle |
|  Link  |  Link  |  Link  |               |  Link  |  Link  |  Link  |
|  (BL)  |  (BL)  |  (BL)  |               |  (BL)  |  (BL)  |  (BL)  |
+--------+--------+--------+               +--------+--------+--------+
|Physical|Physical|Physical|               |Physical|Physical|Physical|
|  (PH)  |  (PH)  |  (PH)  |  __________   |  (PH)  |  (PH)  |  (PH)  |
+----+---+----+---+----+---+ /\          \ +----+---+----+---+----+---+
     |        |        |    /  \          \      |        |        |
     |        |        +--------\          \-----+        |        |
     |        |           /      \          \             |        |
     |        +-------------------\          \------------+        |
     |           _________\_______/  Bundle  /_                    |
     |          /\               /          /  \                   |
     +------------| Bundle Link /          /    |------------------+
                \/_____________/          /____/
                             \/__________/

                   Figure 1: MFR Reference Diagram

   Note 1: C-Plane operation as described in Q.933 [Q.933] and FRF.4
   [FRF.4]

   Note 2: Multiple frame acknowledged information transfer mode as
   described in Q.922 [Q.922]

   Note 3: Core aspects for use with frame relay bearer service as
   described in Q.922, Annex A [Q.922]

2.2. Structure of the MIB

The UNI/NNI MFR managed objects consist of two scalar objects and
three tables.

2.2.1. mfrBundleMaxNumBundles

This scalar is used to inform the manager of the maximum number of
bundles supported by this device.

2.2.2. mfrBundleNextIndex

   This scalar is used to assist the manager in selecting a value for
   mfrBundleIndex during row creation.  It can also be used to avoid
   race conditions with multiple managers trying to create rows in the
   table (see RFC 2494 [RFC2494] for one such algorithm).

2.2.3. mfrBundleTable

   This table provides a means to configure and monitor bundles.  It is
   indexed by mfrBundleIndex and contains these columns:

      -  mfrBundleIndex                    Integer32
      -  mfrBundleIfIndex                  InterfaceIndex
      -  mfrBundleRowStatus                RowStatus
      -  mfrBundleNearEndName              SnmpAdminString
      -  mfrBundleFragmentation            INTEGER
      -  mfrBundleMaxFragSize              Integer32
      -  mfrBundleTimerHello               INTEGER
      -  mfrBundleTimerAck                 INTEGER
      -  mfrBundleCountMaxRetry            INTEGER
      -  mfrBundleActivationClass          INTEGER
      -  mfrBundleThreshold                Integer32
      -  mfrBundleMaxDiffDelay             Integer32
      -  mfrBundleSeqNumSize               INTEGER
      -  mfrBundleLinksConfigured          Integer32
      -  mfrBundleLinksActive              Integer32
      -  mfrBundleBandwidth                Integer32
      -  mfrBundleFarEndName               SnmpAdminString
      -  mfrBundleResequencingErrors       Counter32

2.2.4. Bundle-to-ifIndex Mapping Table

   This table provides a means to take an ifIndex and find the
   corresponding mfrBundleIndex.  It is indexed by ifIndex and contains
   these columns:

      -  mfrBundleIfIndexMapping           Integer32

2.2.5. mfrBundleLinkTable

This table provides a means to configure and monitor bundle links.
It is indexed by ifIndex and contains these columns:

      -  mfrBundleLinkRowStatus             RowStatus
      -  mfrBundleLinkConfigBundleIndex     Integer32
      -  mfrBundleLinkNearEndName           SnmpAdminString
      -  mfrBundleLinkState                 MfrBundleLinkState
      -  mfrBundleLinkFarEndName            SnmpAdminString
      -  mfrBundleLinkFarEndBundleName      SnmpAdminString
      -  mfrBundleLinkDelay                 Integer32
      -  mfrBundleLinkFramesControlTx       Counter32
      -  mfrBundleLinkFramesControlRx       Counter32
      -  mfrBundleLinkFramesControlInvalid  Counter32
      -  mfrBundleLinkTimerExpiredCount     Counter32
      -  mfrBundleLinkLoopbackSuspected     Counter32
      -  mfrBundleLinkUnexpectedSequence    Counter32
      -  mfrBundleLinkMismatch              Counter32

2.3. Relationship With Other MIBS and Tables

2.3.1. Relationship With Interface Table

2.3.1.1. Bundle Links

   Each bundle link will appear as an interface in the ifTable.  The
   ifIndex that appears in the ifTable is used for indexing the bundle
   link tables in the UNI-NNI MFR MIB.

2.3.1.2. Bundles

   Each bundle will appear as an interface in the ifTable.  There will
   be corresponding mfrBundleIndex which may be different than the
   ifIndex of the bundle.

   The reason is best summarized in RFC 2494 [RFC2494], which describes
   frame relay bundle of DS0.  It says:

      This table is not indexed by ifIndex because the manager has to
      choose the index in a createable row and the agent must be allowed
      to select ifIndex values.

   The rows in the ifEntry table are not createable as they do not have
   row status.  RFC 2863 [RFC2863] suggests that the ifIndex should be
   chosen by the agent.  Here is its statement regarding row creation
   and deletion:

      While some interfaces, for example, most physical interfaces,
      cannot be created via network management, other interfaces such as
      logical interfaces sometimes can be.  The ifTable contains only
      generic information about an interface.  Almost all 'create-able'
      interfaces have other, media-specific, information through which

      configuration parameters may be supplied prior to creating such an
      interface.  Thus, the ifTable does not itself support the creation
      or deletion of an interface (specifically, it has no RowStatus
      column).  Rather, if a particular interface type supports the
      dynamic creation and/or deletion of an interface of that type,
      then that media-specific MIB should include an appropriate
      RowStatus object (see the ATM LAN-Emulation Client MIB [ATMLANE]
      for an example of a MIB which does this).  Typically, when such a
      RowStatus object is created/deleted, then the conceptual row in
      the ifTable appears/disappears as a by-product, and an ifIndex
      value (chosen by the agent) is stored in an appropriate object in
      the media-specific MIB.

   The ATM LAN-Emulation Client MIB [ATMLANE] uses different indices and
   so does the IMA MIB [ATMIMA].  Looking at the examples we have, and
   the statements from RFC, it seems better to have two indices.  This
   gives the SNMP agent implementor the freedom to manage their ifIndex
   in the way they like.

2.3.1.3. Mapping Between ifIndex and mfrBundleIndex

   The mfrBundleIfIndexMappingTable is indexed by ifIndex and provides
   the means to map a given ifIndex into the corresponding
   mfrBundleIndex.  The mfrBundleIfIndexMapping object in the
   mfrBundleTable (indexed by mfrBundleIndex) provides the reverse
   mapping of a mfrBundleIndex to the corresponding ifIndex in the
   ifTable.

2.3.1.4. ifTable Objects

   The bundle configuration and status table.  There is a one-to-one
   correspondence between a bundle and an interface represented in the
   ifTable.

   The following objects of the ifTable have specific meaning for an MFR
   bundle:

      ifAdminStatus  -  the bundle admin status
      ifOperStatus   -  the bundle operational status
      ifSpeed        -  the current bandwidth of the bundle
      ifInUcastPkts  -  the number of frames received on the bundle
      ifOutUcastPkts -  the number of frames transmitted on the bundle
      ifInErrors     -  frame (not fragment) errors
      ifOutErrors    -  frame (not fragment) errors

   The following objects of the ifTable have specific meaning for an MFR
   bundle link:

      ifAdminStatus  -  the bundle link admin status
      ifOperStatus   -  the bundle link operational status
      ifSpeed        -  the bandwidth of the bundle link interface
      ifInUcastPkts  -  the number of frames received on the bundle link
      ifOutUcastPkts -  the number of frames transmitted on the bundle
                        link
      ifInErrors     -  frame and fragment errors
      ifOutErrors    -  frame and fragment errors

2.3.2. Relationship With Interface Stack Table

   The bundles and bundle links will appear in the ifStackTable defined
   in RFC 2863 [RFC2863].  Each bundle link will appear a lower layer to
   its owner bundle.  The bundle will appear as a higher layer to the
   bundle links and as a lower layer to a frame relay service or UNI.

2.3.3. Relationship With Frame Relay DTE MIB

The bundle will have a one-to-one correspondence with a DLCMI or UNI
that appear in the DTE MIB tables [RFC2115].

2.3.4. Relationship With Frame Relay Service MIB

There is a one-to-one relationship between the MFR bundle and the
frame relay service logical port defined in RFC1604 [RFC1604].

2.3.5. Example

   Figure two shows an example of how the various tables are related.
   This example shows two bundles composed of 2 T1s each.  The bundles
   have a mfrBundleIndex of 10 and 20 respectively.

                     +-------------------------+
                     |   Frame Relay Service   |
                     +-----+-------------+-----+
                           |             |
                     +-----+------+------+-----+
                     | MFR Bundle | MFR Bundle |
                     |    10      |     20     |
                     +--+-----+---+---+-----+--+
                        |     |       |     |
                      +-+-+ +-+-+   +-+-+ +-+-+
                      |T1 | |T1 |   |T1 | |T1 |
                      +---+ +---+   +-+-+ +---+

          Figure 2: Frame Relay Service Being Carried on 4 T1s

   The assignment of the ifTable index values could for example be:

      ifIndex |  Description               | ifType
      --------+----------------------------+----------------------
         1    |  FrameRelayService         | frameRelayService(44)
         2    |  MFR Bundle #10            | frf16MfrBundle(163)
         3    |  MFR Bundle #20            | frf16MfrBundle(163)
         4    |  ds1 #1/MFR Bundle Link #1 | ds1(18)
         5    |  ds1 #2/MFR Bundle Link #2 | ds1(18)
         6    |  ds1 #3/MFR Bundle Link #3 | ds1(18)
         7    |  ds1 #4/MFR Bundle Link #4 | ds1(18)

   The ifStackTable is then used to show the relationships between the
   various interfaces.

      HigherLayer | LowerLayer
      ------------+-----------
          0       |     1
          1       |     2
          1       |     3
          2       |     4
          2       |     5
          3       |     6
          3       |     7
          4       |     0
          5       |     0
          6       |     0
          7       |     0

   The mfrBundleIfIndexMappingTable shows the relationship between the
   ifTable ifIndex and the mfrBundleIndex:

      ifIndex | mfrBundleIfIndexMappingIndex
      --------+-----------------------------
         2    |            10
         3    |            20

   The mfrBundleTable shows the relationship between the mfrBundleIndex
   and the ifIndex:

      mfrBundleIndex | mfrBundleIfIndex
      ---------------+-----------------
              10     |      2
              20     |      3

   The mfrBundleLinkTable shows the relationship between the bundles and
   bundle links:

      mfrBundleIndex | mfrBundleLinkIfIndex
      ---------------+---------------------
             10      |        4
             10      |        5
             20      |        6
             20      |        7

2.4. Creation Of Bundles and Bundle Links

2.4.1. Creation Of Bundles

   A new bundle is created by setting a createAndGo(4) value in the
   mfrBundleRowStatus RowStatus object.  Optionally, an agent could also
   support setting a value of createAndWait(5) followed by a set to the
   value active(1).

   When a bundle is created, the agent must create a new interface in
   the ifTable.  The ifIndex for this new interface is used for the
   value of mfrBundleIfIndex.

2.4.2. Creation Of Bundle Links

   A new bundle link is created by setting a createAndGo(4) value in the
   mfrBundleLinkRowStatus RowStatus object.

   The bundle link is associated with a specific physical interface and
   uses the ifIndex of the physical interface.  The mfrBundleLinkEntry
   row objects may be created after or during creation of the physical
   interface's ifEntry row objects.

   The bundle identified in the object mfrBundleIndex must exist at time
   of bundle link creation.

2.5. Notifications

The linkUp and linkDown traps are defined in RFC 2223 [RFC2223].

2.5.1. Bundle

The following SNMP traps are defined for MFR bundles.

2.5.1.1. linkUp

   This trap is sent when the ifOperStatus of a bundle transitions from
   down to up.  This occurs when a sufficient number of links
   (determined by mfrBundleActivationClass and mfrBundleThreshold) are
   in the operationally up state.

2.5.1.2. linkDown

   This trap is sent when the ifOperStatus of a bundle transitions from
   up to down.  This occurs when a insufficient number of links
   (determined by mfrBundleActivationClass and mfrBundleThreshold) are
   in the operationally up state.

2.5.2. Bundle Link

The following SNMP traps are defined for MFR bundle links.

2.5.2.1. linkUp

This trap is sent when a mfrBundleLinkState object transitions to the
value mfrBundleLinkStateUp.

2.5.2.2. linkDown

This trap is sent when a mfrBundleLinkState object transitions from
the value mfrBundleLinkStateUp.

2.5.2.3. mfrMibTrapBundleLinkMismatch

   This trap indicates that a bundle link mismatch has been detected.
   The following objects are reported:

   -  mfrBundleNearEndName:          configured name of near end bundle
   -  mfrBundleFarEndName:           previously reported name of far
                                     end bundle
   -  mfrBundleLinkNearEndName:      configured name of near end bundle
   -  mfrBundleLinkFarEndName:       reported name of far end bundle
   -  mfrBundleLinkFarEndBundleName: currently reported name of far
                                     end bundle

   Note that the configured items may have been configured
   automatically.  Note also that the mfrBundleLinkMismatch counter is
   incremented when the trap is sent.

3. Object Definitions

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the subset of Abstract Syntax Notation One (ASN.1)
   defined in the SMI.  In particular, each object type is named by an
   OBJECT IDENTIFIER, an administratively assigned name.  The object
   type together with an object instance serves to uniquely identify a
   specific instantiation of the object.  For human convenience, we
   often use a textual string, termed the descriptor, to refer to the
   object type.

FR-MFR-MIB DEFINITIONS ::= BEGIN

   IMPORTS
      MODULE-IDENTITY, OBJECT-TYPE, Integer32, Counter32,
         NOTIFICATION-TYPE, transmission
         FROM SNMPv2-SMI
      TEXTUAL-CONVENTION, TestAndIncr, RowStatus
         FROM SNMPv2-TC
      MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
         FROM SNMPv2-CONF
      SnmpAdminString
         FROM SNMP-FRAMEWORK-MIB
      InterfaceIndex, ifIndex
         FROM IF-MIB;

   mfrMib MODULE-IDENTITY
      LAST-UPDATED "200011300000Z"
      ORGANIZATION "IETF Frame Relay Service MIB (frnetmib)
                    Working Group"
      CONTACT-INFO
        "WG Charter:
             http://www.ietf.org/html.charters/frnetmib-charter.html
         WG-email:      frnetmib@sunroof.eng.sun.com
         Subscribe:     frnetmib-request@sunroof.eng.sun.com
         Email Archive: ftp://ftp.ietf.org/ietf-mail-archive/frnetmib

         Chair:      Andy Malis
                     Vivace Networks
         Email:      Andy.Malis@vivacenetworks.com

         WG editor:  Prayson Pate
                     Overture Networks
         Email:      prayson.pate@overturenetworks.com

         Co-author:  Bob Lynch
                     Overture Networks

         EMail:      bob.lynch@overturenetworks.com

         Co-author:  Kenneth Rehbehn
                     Megisto Systems, Inc.
         EMail:      krehbehn@megisto.com"

      DESCRIPTION
         "This is the MIB used to control and monitor the multilink
          frame relay (MFR) function described in FRF.16."

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------
   -- Revision History
   -- ---------------------------------------------------------
   -- ---------------------------------------------------------

      REVISION "200011300000Z"
      DESCRIPTION
          "Published as RFC 3020."

      ::= { transmission 47 }

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------
   -- Textual Conventions
   -- ---------------------------------------------------------
   -- ---------------------------------------------------------

   MfrBundleLinkState ::= TEXTUAL-CONVENTION
      STATUS      current
      DESCRIPTION
         "The possible states for a bundle link, as defined in
          Annex A of FRF.16."
      REFERENCE "FRF.16 Annex A"
      SYNTAX  INTEGER {
         mfrBundleLinkStateAddSent       (1),
         mfrBundleLinkStateAddRx         (2),
         mfrBundleLinkStateAddAckRx      (3),
         mfrBundleLinkStateUp            (4),
         mfrBundleLinkStateIdlePending   (5),
         mfrBundleLinkStateIdle          (6),
         mfrBundleLinkStateDown          (7),
         mfrBundleLinkStateDownIdle      (8)
         }

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------
   -- Object Identifiers

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------

   mfrMibScalarObjects     OBJECT IDENTIFIER ::= { mfrMib 1 }
   mfrMibBundleObjects     OBJECT IDENTIFIER ::= { mfrMib 2 }
   mfrMibBundleLinkObjects OBJECT IDENTIFIER ::= { mfrMib 3 }
   mfrMibTraps             OBJECT IDENTIFIER ::= { mfrMib 4 }
   mfrMibConformance       OBJECT IDENTIFIER ::= { mfrMib 5 }

   mfrMibTrapsPrefix       OBJECT IDENTIFIER ::= { mfrMibTraps 0 }

   mfrMibGroups      OBJECT IDENTIFIER ::= { mfrMibConformance 1 }
   mfrMibCompliances OBJECT IDENTIFIER ::= { mfrMibConformance 2 }

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------
   -- Scalars
   -- ---------------------------------------------------------
   -- ---------------------------------------------------------

   mfrBundleMaxNumBundles OBJECT-TYPE
      SYNTAX  Integer32
      MAX-ACCESS read-only
      STATUS  current
      DESCRIPTION
         "This object is used to inform the manager of the
          maximum number of bundles supported by this device."
      ::= { mfrMibScalarObjects 1 }

   mfrBundleNextIndex OBJECT-TYPE
      SYNTAX  TestAndIncr
      MAX-ACCESS read-write
      STATUS  current
      DESCRIPTION
         "This object is used to assist the manager in
          selecting a value for mfrBundleIndex during row creation
          in the mfrBundleTable.  It can also be used to avoid race
          conditions with multiple managers trying to create
          rows in the table (see RFC 2494 [RFC2494] for one such
          alogrithm)."
      REFERENCE "RFC 2494"
      ::= { mfrMibScalarObjects 2 }

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------
   -- Bundle Table
   -- ---------------------------------------------------------
   -- ---------------------------------------------------------

   mfrBundleTable OBJECT-TYPE
      SYNTAX  SEQUENCE OF MfrBundleEntry
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
         "The bundle configuration and status table.  There
          is a one-to-one correspondence between a bundle
          and an interface represented in the ifTable.

          The following objects of the ifTable have specific
          meaning for an MFR bundle:
             ifAdminStatus  - the bundle admin status
             ifOperStatus   - the bundle operational status
             ifSpeed        - the current bandwidth of the bundle
             ifInUcastPkts  - the number of frames received
                              on the bundle
             ifOutUcastPkts - the number of frames transmitted
                              on the bundle
             ifInErrors     - frame (not fragment) errors
             ifOutErrors    - frame (not fragment) errors
             "
      ::= { mfrMibBundleObjects 3 }

   mfrBundleEntry OBJECT-TYPE
      SYNTAX  MfrBundleEntry
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
         "An entry in the bundle table."
      INDEX   { mfrBundleIndex }
      ::= { mfrBundleTable 1 }

   MfrBundleEntry ::=
      SEQUENCE {
         mfrBundleIndex
            Integer32,
         mfrBundleIfIndex
            InterfaceIndex,
         mfrBundleRowStatus
            RowStatus,
         mfrBundleNearEndName
            SnmpAdminString,
         mfrBundleFragmentation
            INTEGER,
         mfrBundleMaxFragSize
            Integer32,
         mfrBundleTimerHello
            INTEGER,

         mfrBundleTimerAck
            INTEGER,
         mfrBundleCountMaxRetry
            INTEGER,
         mfrBundleActivationClass
            INTEGER,
         mfrBundleThreshold
            Integer32,
         mfrBundleMaxDiffDelay
            Integer32,
         mfrBundleSeqNumSize
            INTEGER,
         mfrBundleMaxBundleLinks
            Integer32,
         mfrBundleLinksConfigured
            Integer32,
         mfrBundleLinksActive
            Integer32,
         mfrBundleBandwidth
            Integer32,
         mfrBundleFarEndName
            SnmpAdminString,
         mfrBundleResequencingErrors
            Counter32
         }

   mfrBundleIndex OBJECT-TYPE
      SYNTAX  Integer32 (1..2147483647)
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
         "The index into the table.  While this corresponds
          to an entry in the ifTable, the value of mfrBundleIndex
          need not match that of the ifIndex in the ifTable.
          A manager can use mfrBundleNextIndex to select a unique
          mfrBundleIndex for creating a new row."
      ::= { mfrBundleEntry 1 }

   mfrBundleIfIndex OBJECT-TYPE
      SYNTAX  InterfaceIndex
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "The value must match an entry in the interface
          table whose ifType must be set to frf16MfrBundle(163).

          For example: if the value of mfrBundleIfIndex is 10,
          then a corresponding entry should be present in

          the ifTable with an index of 10 and an ifType of 163."
      ::= { mfrBundleEntry 2 }

   mfrBundleRowStatus OBJECT-TYPE
      SYNTAX  RowStatus
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
          "The mfrBundleRowStatus object allows create, change,
           and delete operations on bundle entries."
      REFERENCE "RFC 1903"
      ::= { mfrBundleEntry 3 }

   mfrBundleNearEndName OBJECT-TYPE
      SYNTAX  SnmpAdminString
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "The configured name of the bundle."
      REFERENCE "FRF.16 section 3.4.1"
      ::= { mfrBundleEntry 4 }

   mfrBundleFragmentation OBJECT-TYPE
      SYNTAX  INTEGER {
         enable  (1),
         disable (2)
         }
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "Controls whether the bundle performs/accepts
          fragmentation and re-assembly.  The possible
          values are:

          enable(1) - Bundle links will fragment frames

          disable(2) - Bundle links will not fragment
                      frames."
      DEFVAL { disable }
      ::= { mfrBundleEntry 5 }

   mfrBundleMaxFragSize OBJECT-TYPE
      SYNTAX  Integer32 (-1..8184)
      UNITS "Octets"
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "The maximum fragment size supported.  Note that this

          is only valid if mfrBundleFragmentation is set to enable(1).

          Zero is not a valid fragment size.

          A bundle that does not support fragmentation must return
          this object with a value of -1."
      DEFVAL { -1 }
      ::= { mfrBundleEntry 6 }

   mfrBundleTimerHello OBJECT-TYPE
      SYNTAX  INTEGER (1..180)
      UNITS "Seconds"
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "The configured MFR Hello Timer value."
      REFERENCE "FRF.16 section 4.3.8.1"
      DEFVAL { 10 }
      ::= { mfrBundleEntry 7 }

   mfrBundleTimerAck OBJECT-TYPE
      SYNTAX  INTEGER (1..10)
      UNITS "Seconds"
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "The configured MFR T_ACK value."
      REFERENCE "FRF.16 section 4.3.8.2"
      DEFVAL { 4 }
      ::= { mfrBundleEntry 8 }

   mfrBundleCountMaxRetry OBJECT-TYPE
      SYNTAX  INTEGER (1..5)
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "The MFR N_MAX_RETRY value."
      REFERENCE "FRF.16 section 4.3.8.3"
      DEFVAL { 2 }
      ::= { mfrBundleEntry 9 }

   mfrBundleActivationClass OBJECT-TYPE
      SYNTAX  INTEGER {
         mfrBundleActivationClassA (1),
         mfrBundleActivationClassB (2),
         mfrBundleActivationClassC (3),
         mfrBundleActivationClassD (4)
         }

      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "Controls the conditions under which the bundle is activated.
          The following settings are available:

             mfrBundleActivationClassA(1) - at least one must link up
             mfrBundleActivationClassB(2) - all links must be up
             mfrBundleActivationClassC(3) - a certain number must be
                                            up.  Refer to
                                            mfrBundleThreshold for
                                            the required number.
             mfrBundleActivationClassD(4) - custom (implementation
                                            specific)."
      REFERENCE "FRF.16 section 4.2.2.1"
      DEFVAL { mfrBundleActivationClassA }
      ::= { mfrBundleEntry 10 }

   mfrBundleThreshold OBJECT-TYPE
      SYNTAX  Integer32 (-1..2147483647)
      UNITS "Bundle Links"
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "Specifies the number of links that must be in operational
          'up' state before the bundle will transition to an
          operational up/active state.  If the number of
          operational 'up' links falls below this value,
          then the bundle will transition to an inactive
          state.

          Note - this is only valid when mfrBundleActivationClass
          is set to mfrBundleActivationClassC or, depending upon the
          implementation, to mfrBundleActivationClassD.  A bundle that
          is not set to one of these must return this object with a
          value of -1."
      REFERENCE "FRF.16 section 4.2.2.1"
      DEFVAL { -1 }
      ::= { mfrBundleEntry 11 }

   mfrBundleMaxDiffDelay OBJECT-TYPE
      SYNTAX  Integer32 (-1..2147483647)
      UNITS "Milliseconds"
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "The maximum delay difference between the bundle
          links.

          A value of -1 indicates that this object does not contain
          a valid value"
      DEFVAL { -1 }
      ::= { mfrBundleEntry 12 }

   mfrBundleSeqNumSize OBJECT-TYPE
      SYNTAX  INTEGER {
          seqNumSize12bit (1),
          seqNumSize24bit (2)
          }
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "Controls whether the standard FRF.12 12-bit
          sequence number is used or the optional 24-bit
          sequence number."
      REFERENCE "FRFTC/99-194"
      DEFVAL { seqNumSize12bit }
      ::= { mfrBundleEntry 13 }

   mfrBundleMaxBundleLinks OBJECT-TYPE
      SYNTAX  Integer32 (1..2147483647)
      UNITS "Bundle Links"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "The maximum number of bundle links supported for
          this bundle."
      ::= { mfrBundleEntry 14 }

   mfrBundleLinksConfigured OBJECT-TYPE
      SYNTAX  Integer32 (1..2147483647)
      UNITS "Bundle Links"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "The number of links configured for the bundle."
      ::= {  mfrBundleEntry 15 }

   mfrBundleLinksActive OBJECT-TYPE
      SYNTAX  Integer32 (-1..2147483647)
      UNITS "Bundle Links"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "The number of links that are active."
      ::= {  mfrBundleEntry 16 }

   mfrBundleBandwidth OBJECT-TYPE
       SYNTAX  Integer32
       UNITS "Bits/Sec"
       MAX-ACCESS  read-only
       STATUS  current
       DESCRIPTION
          "The amount of available bandwidth on the bundle"
       ::= {  mfrBundleEntry 17 }

   mfrBundleFarEndName OBJECT-TYPE
      SYNTAX  SnmpAdminString
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "Name of the bundle received from the far end."
      REFERENCE "FRF.16 section 3.4.1"
      ::= { mfrBundleEntry 18 }

   mfrBundleResequencingErrors OBJECT-TYPE
      SYNTAX  Counter32
      UNITS "Error Events"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "A count of the number of resequencing errors.  Each event
          may correspond to multiple lost frames.  Example:
          Say sequence number 56, 59 and 60 is received for DLCI 100.
          It is decided by some means that sequence 57 and 58 is lost.
          This counter should then be incremented by ONE, even though
          two frames were lost."
      ::= { mfrBundleEntry 19 }

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------
   -- ifIndex Mapping to Bundle Index Table
   -- ---------------------------------------------------------
   -- ---------------------------------------------------------

   mfrBundleIfIndexMappingTable OBJECT-TYPE
      SYNTAX  SEQUENCE OF MfrBundleIfIndexMappingEntry
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
          "A table mapping the values of ifIndex to the
           mfrBundleIndex.  This is required in order to find
           the mfrBundleIndex given an ifIndex.  The mapping of
           mfrBundleIndex to ifIndex is provided by the
           mfrBundleIfIndex entry in the mfrBundleTable."

      ::= { mfrMibBundleObjects 4 }

   mfrBundleIfIndexMappingEntry OBJECT-TYPE
      SYNTAX  MfrBundleIfIndexMappingEntry
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
           "Each row describes one ifIndex to mfrBundleIndex mapping."
    INDEX   { ifIndex }
    ::= { mfrBundleIfIndexMappingTable 1 }

   MfrBundleIfIndexMappingEntry ::=
      SEQUENCE {
        mfrBundleIfIndexMappingIndex
           Integer32
        }

   mfrBundleIfIndexMappingIndex OBJECT-TYPE
      SYNTAX  Integer32 (1..2147483647)
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
           "The mfrBundleIndex of the given ifIndex."
    ::= { mfrBundleIfIndexMappingEntry 2 }

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------
   -- Bundle Link Table
   -- ---------------------------------------------------------
   -- ---------------------------------------------------------

   mfrBundleLinkTable OBJECT-TYPE
      SYNTAX  SEQUENCE OF MfrBundleLinkEntry
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
         "The bundle link configuration and status table.  There
          is a one-to-one correspondence between a bundle link
          and a physical interface represented in the ifTable.  The
          ifIndex of the physical interface is used to index the
          bundle link table, and to create rows.

          The following objects of the ifTable have specific
          meaning for an MFR bundle link:

             ifAdminStatus  - the bundle link admin status
             ifOperStatus   - the bundle link operational
                              status

             ifSpeed        - the bandwidth of the bundle
                              link interface
             ifInUcastPkts  - the number of frames received
                              on the bundle link
             ifOutUcastPkts - the number of frames transmitted
                              on the bundle link
             ifInErrors     - frame and fragment errors
             ifOutErrors    - frame and fragment errors"
      ::= { mfrMibBundleLinkObjects 1 }

   mfrBundleLinkEntry OBJECT-TYPE
      SYNTAX  MfrBundleLinkEntry
      MAX-ACCESS  not-accessible
      STATUS  current
      DESCRIPTION
         "An entry in the bundle link table."
      INDEX   { ifIndex }
      ::= { mfrBundleLinkTable 1 }

   MfrBundleLinkEntry ::=
      SEQUENCE {
         mfrBundleLinkRowStatus
            RowStatus,
         mfrBundleLinkConfigBundleIndex
            Integer32,
         mfrBundleLinkNearEndName
            SnmpAdminString,
         mfrBundleLinkState
            MfrBundleLinkState,
         mfrBundleLinkFarEndName
            SnmpAdminString,
         mfrBundleLinkFarEndBundleName
            SnmpAdminString,
         mfrBundleLinkDelay
            Integer32,
         mfrBundleLinkFramesControlTx
            Counter32,
         mfrBundleLinkFramesControlRx
            Counter32,
         mfrBundleLinkFramesControlInvalid
            Counter32,
         mfrBundleLinkTimerExpiredCount
            Counter32,
         mfrBundleLinkLoopbackSuspected
            Counter32,
         mfrBundleLinkUnexpectedSequence
            Counter32,
         mfrBundleLinkMismatch

            Counter32
         }

   mfrBundleLinkRowStatus OBJECT-TYPE
      SYNTAX  RowStatus
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "The mfrBundleLinkRowStatus object allows create, change,
          and delete operations on mfrBundleLink entries.

          The create operation must fail if no physical interface
          is associated with the bundle link."
      ::= { mfrBundleLinkEntry 1 }

   mfrBundleLinkConfigBundleIndex OBJECT-TYPE
      SYNTAX  Integer32 (1..2147483647)
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "The mfrBundleLinkConfigBundleIndex object allows
          the manager to control the bundle to which the bundle
          link is assigned.  If no value were in this field, then
          the bundle would remain in NOT_READY rowStatus and be
          unable to go to active.  With an appropriate mfrBundleIndex
          in this field, then we could put the mfrBundleLink row in
          NOT_IN_SERVICE or ACTIVE rowStatus."
      ::= { mfrBundleLinkEntry 2 }

   mfrBundleLinkNearEndName OBJECT-TYPE
      SYNTAX  SnmpAdminString
      MAX-ACCESS  read-create
      STATUS  current
      DESCRIPTION
         "The configured bundle link name that is sent to the far end."
      ::= { mfrBundleLinkEntry 3 }

   mfrBundleLinkState OBJECT-TYPE
      SYNTAX  MfrBundleLinkState
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "Current bundle link state as defined by the MFR protocol
          described in Annex A of FRF.16."
      REFERENCE "FRF.16 Annex A"
      ::= { mfrBundleLinkEntry 4 }

   mfrBundleLinkFarEndName OBJECT-TYPE

      SYNTAX  SnmpAdminString
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "Name of bundle link received from far end."
      REFERENCE "FRF.16 section 3.4.2"
      ::= { mfrBundleLinkEntry 5 }

   mfrBundleLinkFarEndBundleName OBJECT-TYPE
      SYNTAX  SnmpAdminString
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "Name of far end bundle for this link received from far end."
      REFERENCE "FRF.16 section 3.4.1"
      ::= { mfrBundleLinkEntry 6 }

   mfrBundleLinkDelay OBJECT-TYPE
      SYNTAX  Integer32 (-1..2147483647)
      UNITS "Milliseconds"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "Current round-trip delay for this bundle link.  The
          value -1 is returned when an implementation does not
          support measurement of the bundle link delay."
      REFERENCE "FRF.16 section 3.4.4"
      ::= { mfrBundleLinkEntry 7 }

   mfrBundleLinkFramesControlTx OBJECT-TYPE
      SYNTAX  Counter32
      UNITS "Frames"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "Number of MFR control frames sent."
      REFERENCE "FRF.16 section 3.2"
      ::= { mfrBundleLinkEntry 8 }

   mfrBundleLinkFramesControlRx OBJECT-TYPE
      SYNTAX  Counter32
      UNITS "Frames"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "Number of valid MFR control frames received."
      REFERENCE "FRF.16 section 3.2"
      ::= { mfrBundleLinkEntry 9 }

   mfrBundleLinkFramesControlInvalid OBJECT-TYPE
      SYNTAX  Counter32
      UNITS "Frames"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "The number of invalid MFR control frames received."
      REFERENCE "FRF.16 section 3.2"
      ::= { mfrBundleLinkEntry 10 }

   mfrBundleLinkTimerExpiredCount OBJECT-TYPE
      SYNTAX  Counter32
      UNITS "Timer Expiration Events"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "Number of times the T_HELLO or T_ACK timers expired."
      REFERENCE "FRF.16 section 4.3.8.1 and 4.3.8.2"
      ::= { mfrBundleLinkEntry 11 }

   mfrBundleLinkLoopbackSuspected OBJECT-TYPE
      SYNTAX  Counter32
      UNITS "Loopback Suspected Events"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "The number of times a loopback has been suspected
          (based upon the use of magic numbers)."
      REFERENCE "FRF.16 section 4.3.7"
      ::= { mfrBundleLinkEntry 12 }

   mfrBundleLinkUnexpectedSequence OBJECT-TYPE
      SYNTAX  Counter32
      UNITS "Frames"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "The number of data MFR frames discarded because the sequence
          number of the frame for a DLCI was less than (delayed frame)
          or equal to (duplicate frame) the one expected for that DLCI.

          Example:
          Say frames with sequence numbers 56, 58, 59 is received for
          DLCI 100.  While waiting for sequence number 57 another frame
          with sequence number 58 arrives.  Frame 58 is discarded and
          the counter is incremented."
      REFERENCE "FRF.16 section 4.2.3.2"
      ::= { mfrBundleLinkEntry 13 }

   mfrBundleLinkMismatch OBJECT-TYPE
      SYNTAX  Counter32
      UNITS "Bundle Name Mismatch Events"
      MAX-ACCESS  read-only
      STATUS  current
      DESCRIPTION
         "The number of times that the unit has been notified by the
          remote peer that the bundle name is inconsistent with other
          bundle links attached to the far-end bundle."
      REFERENCE "FRF.16 section 4.3.2.4"
      ::= { mfrBundleLinkEntry 14 }

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------
   -- Notifications/Traps
   -- ---------------------------------------------------------
   -- ---------------------------------------------------------

   mfrMibTrapBundleLinkMismatch NOTIFICATION-TYPE
      OBJECTS {
         mfrBundleNearEndName,
         mfrBundleFarEndName,
         mfrBundleLinkNearEndName,
         mfrBundleLinkFarEndName,
         mfrBundleLinkFarEndBundleName
         }
      STATUS  current
      DESCRIPTION
         "This trap indicates that a bundle link mismatch has
          been detected.  The following objects are reported:

          mfrBundleNearEndName:    configured name of near end bundle

          mfrBundleFarEndName:     previously reported name of
                                far end bundle

          mfrBundleLinkNearEndName: configured name of near end bundle

          mfrBundleLinkFarEndName: reported name of far end bundle

          mfrBundleLinkFarEndBundleName: currently reported name of
                                far end bundle

          Note: that the configured items may have been configured
                automatically.

          Note: The mfrBundleLinkMismatch counter is incremented when
                the trap is sent."

      REFERENCE "FRF.16 section 4.3.2.4"
       ::= { mfrMibTrapsPrefix 1 }

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------
   -- Conformance/Compliance
   -- ---------------------------------------------------------
   -- ---------------------------------------------------------

   mfrMibCompliance MODULE-COMPLIANCE
      STATUS      current
      DESCRIPTION
         "The compliance statement for equipment that implements
          the FRF16 MIB.  All of the current groups are mandatory,
          but a number of objects may be read-only if the
          implementation does not allow configuration."
      MODULE -- this module
      MANDATORY-GROUPS {
         mfrMibBundleGroup,
         mfrMibBundleLinkGroup,
         mfrMibTrapGroup
         }

      OBJECT     mfrBundleFragmentation
      MIN-ACCESS read-only
      DESCRIPTION
          "Write access is not required, but the value used must be
           reported."

      OBJECT     mfrBundleMaxFragSize
      MIN-ACCESS read-only
      DESCRIPTION
          "Write access is not required, but the value used must be
           reported.
           A value of -1 indicates that the value is not applicable."

      OBJECT     mfrBundleThreshold
      MIN-ACCESS read-only
      DESCRIPTION
          "Write access is not required, but the value used must be
           reported.
           A value of -1 indicates that the value is not applicable."

      OBJECT     mfrBundleMaxDiffDelay
      MIN-ACCESS read-only
      DESCRIPTION
          "Write access is not required, but the value used must be
           reported."

      OBJECT     mfrBundleSeqNumSize
      MIN-ACCESS read-only
      DESCRIPTION
          "Write access is not required, but the value used must be
           reported.
           A value of -1 indicates that the value is not applicable."

      ::= { mfrMibCompliances 1 }

   -- ---------------------------------------------------------
   -- ---------------------------------------------------------
   -- Units of Conformance
   -- ---------------------------------------------------------
   -- ---------------------------------------------------------

   mfrMibBundleGroup OBJECT-GROUP
      OBJECTS {
         mfrBundleMaxNumBundles,
         mfrBundleNextIndex,
         mfrBundleIfIndex,
         mfrBundleRowStatus,
         mfrBundleNearEndName,
         mfrBundleFragmentation,
         mfrBundleMaxFragSize,
         mfrBundleTimerHello,
         mfrBundleTimerAck,
         mfrBundleCountMaxRetry,
         mfrBundleActivationClass,
         mfrBundleThreshold,
         mfrBundleMaxDiffDelay,
         mfrBundleMaxBundleLinks,
         mfrBundleLinksConfigured,
         mfrBundleLinksActive,
         mfrBundleBandwidth,
         mfrBundleSeqNumSize,
         mfrBundleFarEndName,
         mfrBundleResequencingErrors,
         mfrBundleIfIndexMappingIndex
         }
      STATUS current
      DESCRIPTION
          "Group of objects describing bundles."
      ::= { mfrMibGroups 1 }

   mfrMibBundleLinkGroup   OBJECT-GROUP
      OBJECTS {
         mfrBundleLinkRowStatus,

         mfrBundleLinkConfigBundleIndex,
         mfrBundleLinkNearEndName,
         mfrBundleLinkState,
         mfrBundleLinkFarEndName,
         mfrBundleLinkFarEndBundleName,
         mfrBundleLinkDelay,
         mfrBundleLinkFramesControlTx,
         mfrBundleLinkFramesControlRx,
         mfrBundleLinkFramesControlInvalid,
         mfrBundleLinkTimerExpiredCount,
         mfrBundleLinkLoopbackSuspected,
         mfrBundleLinkUnexpectedSequence,
         mfrBundleLinkMismatch
         }
      STATUS current
      DESCRIPTION
          "Group of objects describing bundle links."
      ::= { mfrMibGroups 2 }

   mfrMibTrapGroup NOTIFICATION-GROUP
      NOTIFICATIONS {
         mfrMibTrapBundleLinkMismatch
         }
      STATUS current
      DESCRIPTION
          "Group of objects describing notifications (traps)."
      ::= { mfrMibGroups 3 }

END

4. Acknowledgments

This document was produced by the Frame Relay Service MIB (frnetmib)
Working Group in conjunction with the Frame Relay Forum.

5. References

   [RFC2571] Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture
             for Describing SNMP Management Frameworks", RFC 2571, April
             1999.

   [RFC1155] Rose, M. and K. McCloghrie, "Structure and Identification
             of Management Information for TCP/IP-based Internets", STD
             16, RFC 1155, May 1990.

   [RFC1212] Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD
             16, RFC 1212, March 1991.

   [RFC1215] Rose, M., "A Convention for Defining Traps for use with the
             SNMP", RFC 1215, March 1991.

   [RFC2578] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
             Rose, M. and S. Waldbusser, "Structure of Management
             Information Version 2 (SMIv2)", STD 58, RFC 2578, April
             1999.

   [RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
             Rose, M. and S. Waldbusser, "Textual Conventions for
             SMIv2", STD 58, RFC 2579, April 1999.

   [RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
             Rose, M. and S. Waldbusser, "Conformance Statements for
             SMIv2", STD 58, RFC 2580, April 1999.

   [RFC1157] Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
             Network Management Protocol", STD 15, RFC 1157, May 1990.

   [RFC1901] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
             "Introduction to Community-based SNMPv2", RFC 1901, January
             1996.

   [RFC1906] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
             "Transport Mappings for Version 2 of the Simple Network
             Management Protocol (SNMPv2)", RFC 1906, January 1996.

   [RFC2572] Case, J., Harrington D., Presuhn R. and B. Wijnen, "Message
             Processing and Dispatching for the Simple Network
             Management Protocol (SNMP)", RFC 2572, April 1999.

   [RFC2574] Blumenthal, U. and B. Wijnen, "User-based Security Model
             (USM) for version 3 of the Simple Network Management
             Protocol (SNMPv3)", RFC 2574, April 1999.

   [RFC1905] Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
             "Protocol Operations for Version 2 of the Simple Network
             Management Protocol (SNMPv2)", RFC 1905, January 1996.

   [RFC2573] Levi, D., Meyer, P. and B. Stewart, "SNMPv3 Applications",
             RFC 2573, April 1999.

   [RFC2575] Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based
             Access Control Model (VACM) for the Simple Network
             Management Protocol (SNMP)", RFC 2575, April 1999.

   [RFC2570] Case, J., Mundy, R., Partain, D. and B. Stewart,
             "Introduction to Version 3 of the Internet-standard Network
             Management Framework", RFC 2570, April 1999.

   [Q.922]   ITU-T, Recommendation Q.922: "ISDN Data Link Layer
             Specification For Frame Mode Bearer Services"

   [Q.933]   ITU-T, Recommendation Q.933: "Signalling Specification For
             Frame Mode Basic Call Control"

   [FRF.4]   R. Cherukuri (ed), FRF.4: "Frame Relay User-to-Network SVC
             Implementation Agreement" January 5, 1994.

   [FRF.16]  M. Sheehan (ed), FRF.16: "UNI/NNI Multilink Frame Relay
             Interworking Implementation Agreement" August 20, 1999.

   [RFC1604] Rehbehn, K. and D. Fowler, "Definitions of Managed Objects
             for Frame Relay Service", RFC 2954, October 2000.

   [RFC2494] Fowler, D., "Definitions of Managed Objects for the DS0 and
             DS0 Bundle Interface Type", RFC 2494, November 1997.

   [RFC2863] McCloghrie, D. and F. Kastenholz, "The Interfaces Group MIB
             using SMIv2", RFC 2233, June 2000.

   [ATMLANE] T. Newton, ed., "LAN Emulation Client Management
             Specification Version 2.0" AF-LANE-0093.000, ATM Forum,
             October, 1998

   [ATMIMA]  R. Vallee, ed., "Inverse Multiplexing for ATM Specification
             Version 1.1" (Appendix A) AF-PHY-0086.001, ATM Forum,
             March, 1999

[RFC2115] Brown, C. and F. Baker, "Management Information Base for
Frame Relay DTEs Using SMIv2", RFC 2115, September 1997.

6. Security Considerations

   There are a number of management objects defined in this MIB that
   have a MAX-ACCESS clause of read-write and/or read-create.  Such
   objects may be considered sensitive or vulnerable in some network
   environments.  The support for SET operations in a non-secure
   environment without proper protection can have a negative effect on
   network operations.

   No managed objects in this MIB contain sensitive information.

   SNMPv1 by itself is not a secure environment.  Even if the network
   itself is secure (for example by using IPSec), even then, there is no
   control as to who on the secure network is allowed to access and
   GET/SET (read/change/create/delete) the objects in this MIB.

   It is recommended that the implementers consider the security
   features as provided by the SNMPv3 framework.  Specifically, the use
   of the User-based Security Model RFC 2574 [RFC2574] and the View-
   based Access Control Model RFC 2575 [RFC2575] is recommended.

   It is then a customer/user responsibility to ensure that the SNMP
   entity giving access to an instance of this MIB, is properly
   configured to give access to the objects only to those principals
   (users) that have legitimate rights to indeed GET or SET
   (change/create/delete) them.

7. Authors' Addresses

   Prayson Pate
   Overture Networks
   P. O. Box 14864
   RTP, NC, USA 27709

   Phone: +1 919 558 2200
   EMail: prayson.pate@overturenetworks.com

   Bob Lynch
   Overture Networks
   P. O. Box 14864
   RTP, NC, USA 27709

   Phone: +1 919 558-2200
   EMail: bob.lynch@overturenetworks.com

   Kenneth Rehbehn
   Megisto Systems, Inc.
   20251 Century Boulevard
   Germantown, MD, USA 20874

   Phone: +1 301 529-4427
   EMail: krehbehn@megisto.com

8. Full Copyright Statement

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

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   or assist in its implementation may be prepared, copied, published
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   kind, provided that the above copyright notice and this paragraph are
   included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
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   developing Internet standards in which case the procedures for
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   followed, or as required to translate it into languages other than
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   The limited permissions granted above are perpetual and will not be
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   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
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Acknowledgement

Funding for the RFC Editor function is currently provided by the
Internet Society.